Cot 215 Degrees

Sin, Cos, Tan, Cot of an Angle
Function
Angle (°)

What is cot 215°?

Answer

cot 215° ≈
1.4281

Angle in radians: 215° = 43π/36. The point of the angle is in quadrant III, where cotangent is positive.

≈ — rounded to 4 decimal places. cot 215° can't be written with square roots: 215° is not a multiple of 3°.

cot 215° = cot(180° + 35°) = cot 35° ≈ 1.4281

cot 215° = cos 215° / sin 215° ≈ 1.4281

xyOP

P(cos 215°, sin 215°) ≈ (−0.8192, −0.5736)

C(cot 215°, 1) ≈ (1.4281, 1) — where line OP meets the line y = 1, on the extension of the ray beyond O (dashed).

All four functions of 215°
FunctionExact valueDecimal
sin 215°—≈ −0.5736
cos 215°—≈ −0.8192
tan 215°—≈ 0.7002
cot 215°—≈ 1.4281

Reference angle: cot 35° ≈ 1.4281

See Also

Recalculate with different values ↑

Cotangent of nearby angles

Anglecot
200°≈ 2.7475
210°√3
211°≈ 1.6643
215°≈ 1.4281
216°√(25 + 10√5)/5
225°1
227°≈ 0.9325

FAQ

What is cot 215°?

cot 215° ≈ 1.4281

Why does cot 215° have no exact value?

A trigonometric value of a whole number of degrees can be written with square roots only when the angle is a multiple of 3°. 215° is not, so no such exact form exists; the value is used as a decimal: cot 215° ≈ 1.4281.

Why does a calculator show 0.2018 for cot 215?

The calculator is in radian mode (RAD): it takes cot 215 as the cotangent of 215 radians, cot 215 rad ≈ 0.2018. Switch it to degrees (DEG): cot 215° ≈ 1.4281. In radians the value is never undefined: π is irrational, so a whole number of radians never lands exactly on an axis.

See Also